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<Title>Soft Bar Shading</Title>
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<p class="heading0">ChartDirector 7.0 (Java Edition)</p>
<p class="heading1">Soft Bar Shading</p>
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<img src="images/softlightbar.png" width='600' height='360'>
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This example demonstrates using soft lighting effect for bars and gradient color for plot area background. It also demonstrates putting axis ticks in between axis labels, as opposed to at the axis labels.<br><br>
Soft lighting is a special shading effect that look like gradient coloring. In this example, soft lighting effect is applied to the bars with the light coming from the left direction.<br><br>
<ul><li> The gradient plot area background is configured by using <a href="BaseChart.linearGradientColor.htm">BaseChart.linearGradientColor</a> to define the gradient color, then use <a href="XYChart.setPlotArea.htm">XYChart.setPlotArea</a> to apply it to the plot area.<br><br>
<li> The <a href="XYChart.setPlotArea.htm">XYChart.setPlotArea</a> also sets the plot area border and grid line colors to white.<br><br>
<li> The soft lighting effect of the bars is defined using <a href="Chart.softLighting.htm">Chart.softLighting</a>, then applied to the bars using <a href="Layer.setBorderColor.htm">Layer.setBorderColor</a>.<br><br>
<li> The ticks in this example is offsetted by 0.5 units using <a href="Axis.setTickOffset.htm">Axis.setTickOffset</a>. As a result, they are not center aligned with the axis labels, but are in between the labels.</ul>
See <a href="softmultibar.htm">Soft Multi-Bar Chart</a> for another example of soft lighting effect with the light coming from the top direction.
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<p class="heading1a">Source Code Listing</p>
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<b>[JSP Version]</b> jspdemo/softlightbar.jsp
<div class='codeblock'><code class='pre'>&lt;%@page import="ChartDirector.*, java.util.*" %&gt;
&lt;%
// The data for the bar chart
double[] data = {450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700};

// The labels for the bar chart
String[] labels = {"1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004", "2005"};

// Create a XYChart object of size 600 x 360 pixels
XYChart c = new XYChart(600, 360);

// Add a title to the chart using 18pt Times Bold Italic font
c.addTitle("Annual Revenue for Star Tech", "Times New Roman Bold Italic", 18);

// Set the plotarea at (60, 40) and of size 500 x 280 pixels. Use a vertical gradient color from
// light blue (eeeeff) to deep blue (0000cc) as background. Set border and grid lines to white
// (ffffff).
c.setPlotArea(60, 40, 500, 280, c.linearGradientColor(60, 40, 60, 280, 0xeeeeff, 0x0000cc), -1,
    0xffffff, 0xffffff);

// Add a multi-color bar chart layer using the supplied data. Use soft lighting effect with light
// direction from left.
c.addBarLayer3(data).setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Left));

// Set x axis labels using the given labels
c.xAxis().setLabels(labels);

// Draw the ticks between label positions (instead of at label positions)
c.xAxis().setTickOffset(0.5);

// Add a title to the y axis with 10pt Arial Bold font
c.yAxis().setTitle("USD (millions)", "Arial Bold", 10);

// Set axis label style to 8pt Arial Bold
c.xAxis().setLabelStyle("Arial Bold", 8);
c.yAxis().setLabelStyle("Arial Bold", 8);

// Set axis line width to 2 pixels
c.xAxis().setWidth(2);
c.yAxis().setWidth(2);

// Output the chart
WebChartViewer viewer = new WebChartViewer(request, "chart1");
viewer.setChart(c, Chart.SVG);

// Include tool tip for the chart
viewer.setImageMap(c.getHTMLImageMap("", "", "title='Year {xLabel}: US$ {value}M'"));
%&gt;
&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt;Soft Bar Shading&lt;/title&gt;
    &lt;!-- Include ChartDirector Javascript Library to support chart interactions --&gt;
    &lt;script type="text/javascript" src="cdjcv.js"&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body style="margin:5px 0px 0px 5px"&gt;
    &lt;div style="font:bold 18pt verdana;"&gt;
        Soft Bar Shading
    &lt;/div&gt;
    &lt;hr style="border:solid 1px #000080; background:#000080" /&gt;
    &lt;div style="font:10pt verdana; margin-bottom:1.5em"&gt;
        &lt;a href="viewsource.jsp?file=&lt;%=request.getServletPath()%&gt;"&gt;View Source Code&lt;/a&gt;
    &lt;/div&gt;
    &lt;!-- ****** Here is the chart image ****** --&gt;
    &lt;%= viewer.renderHTML(response) %&gt;
&lt;/body&gt;
&lt;/html&gt;</code></div>
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